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 RADIOHF - Sell: Kenwood Filter YK-88- C1 
- Selling Kenwood filter YK 88 C1 with mounting screws. $95 shipped CONUS. No trades and no foreign sales
- Listing #1748334 - Submitted on 11/03/25 by Callsign N3US - IP: 71-219-157-165.chvl.qwest.net
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- RADIOHF - Sell: Kenwood Filter YG-455 C1
- Selling Kenwood Filter YG-455 C1 includes mounting screws. Shipped CONUS $95. No trades and no foreign sales
- Listing #1748333 - Submitted on 11/03/25 by Callsign N3US - IP: 71-219-157-165.chvl.qwest.net
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 RADIOHF - Elecraft KRX3 K3 Sub Receiver SALE
- ELECRAFT K3 K3S KRX3 SUBRECEIVER - OPTION -
$299 delivered check , Zelle, or PP FF ok.
$269 with a k3 or P3 purchase.
Or trade for something I can use ??
Removed from a working radio - see list of what you get :
SUBRECEIVER
DSP BOARD
MIXER BOARD
NOISE BLANKER BOARD
KNB3 SUBIN BOARD
KNB3 SUBOUT BOARD
4 TMP CABLES
HARDWARE
KSYN3 - Original version SYN board.
Please see pictures of everything included.
This is a stock picture,as I had 2 of these.
I think everything in this option kit is unavailable at this time from Elecraft,and may never be made again .
Will fit your K3 or K3S rig. If installing in a K3s, or a K3 with a newer SYN board,you will need to get a newer KSYN3A board.
I usually have these in a separate listing.
I think these were around $800 when available.
You will need to obtain filters if you need them,but they are easy.
I have them listed in a separate listing.
Happy to help you if you are not 100% sure how to do this !
Larry k6ro
- Listing #1746317 - Submitted on 10/15/25 by Callsign K6RO, Modified on 11/03/25, Web Site: http://www.K6RO.com - IP: 207.212.9.119
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- RADIOHF - Drake 2B and 2AC calibrator
- Estate Sale: Drake 2B receiver in good condition. Front panel and cabinet are very nice. The chassis has normal corrosion.
I have gone through it and cleaned all switches and contacts. Operation is excellent with great sensitivity. Upon turning on, from cold, slight AC hum present but goes away as soon as the receiver comes to life. It probably would be resolved by changing the main filter cap. No AC hum present during normal operation.
Has the optional crystal calibrator which works as it should. This would be a great second rcvr. Non smoker owned.
$150 plus shipping
Prefer Zelle, money order or bank check. No paypal.
- Listing #1748317 - Submitted on 11/02/25 by Callsign KB9SI - IP: 10.sub-75-223-75.myvzw.com
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- RADIOHF - For Sale: Yaesu FT-100d
- FT-100d with mobile mount, MH-36b mic with good coil cord, Owner's manual with full schematics. This FT-100d has the 400hz CW filter and the 5.2 khz AM filter. Included is the original box with matching serial number. It has no screen issues, front panel latches as it should, and it makes power on all bands but I don't have the means to measure accurately. It has some scuffs and paint chips, but that is to be expected on a radio of this age. Price $525 ($540 if Paypal) shipped in CONUS No returns.
- Listing #1748305 - Submitted on 11/02/25 by Callsign K5DOG - IP: syn-070-112-150-121.res.spectrum.com
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- MISC - Full Power Low Pass TVI Filters For Sal
Full Power Low Pass TVI Filters For Sale:
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A low pass TVI filter is added to the transmitter
to reduce harmonic interference. All of these
will handle full legal power, have SO-239
connectors in and out, and are 50 ohm filters.
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B & W 425 (same as FL-10/1500)
Cuts off just above 10 meters, and handles
1500 Watts. $20.
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Nye Viking 020-001
Rated at 2000 Watts continuous, 5000 W peak SSB.
Over 65 dB Attenuation. It looks like new. $30
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Prices do not include shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
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- Listing #1748291 - Submitted on 11/02/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net
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- MISC - For Sale: Low Pass TVI Filters
For Sale: Low Pass TVI Filters
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A low pass TVI filter is added to the transmitter to reduce harmonic
interference. All of these have SO-239 connectors in and out, and
are 50 ohm filters.
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Archer 21-517 High Power LPF
Says in takes 1 KW AM to 30 MHz.
I would say about half that!
60 db attenuation above 50 MHz. $20
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Avanti AV-800
It says that the 3 db cutoff frequency is 43 MHz, and that it is
especially useful for Channel 2 and 5 interference. It also says
it is rated at 1000 Watts, but it looks more like 500 to 600 Watts
realistically. $18
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Pace PS8530
Cuts off at 40 MHz. 150 W Max.
$15
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Gold Line
Not much info other than it says for use from 0 to 30 MHz, and it
is rated at 1000 Watts. Again, I would say 500 to 600 watts. $17
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Para Dynamics PDC 1089
This filter is rated at a full Kilowatt, up to 30 MHz. In 5 x 6 x 2
inch black box, instead of a long enclosure. $20
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Prices do not include shipping from Florida.
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Thanks. 73,
Ken Simpson, W8EK
Voice Phone (352) 732-8400
.
- Listing #1748290 - Submitted on 11/02/25 by Callsign W8EK - IP: fl-67-76-85-5.sta.embarqhsd.net
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- AMPHF - Heathkit SB220
- I inherited a family members VERY CLEAN Heathkit SB220.
I undertook a total upgrade to bring it up to current specs.
It includes the newly installed SB220 Harbach Master kit
HARBACH FB220 filter caps and bleeder resistor board
HARBACH RM220 metering board
HARBACH FM220 fan
HARBACH Parasitic suppressors
HARBACH Ohmite glitch resistor
HARBACH 220 axial electrolytic cap
HARBACH BRK-220 circuit breakers and RF bypass caps
HARBACH New meter lamps
HARBACH Soft Key kit SK220
HARBACH Soft Start SS-221-240 kit for 240v (included but NOT INSTALLED) as this version is specific for 240v)
If you decide to wire it for 110v, Harbach sells the 120v version
HARBACH Doorknob cap
HARBACH SO239 input and output coax connectors
Bias mod wired
Grounded the 3-500z grids
New rubber feet (white)
I have tested it and it shows 1300w pep output on high voltage SSB
And over 1000w cw low voltage keydown
I am selling it for $1500, plus shipping
I will consider offers.
Bob Kogen, W6DN
- Listing #1746692 - Submitted on 10/18/25 by Callsign W6DN, Modified on 11/02/25 - IP: 104-53-136-248.lightspeed.irvnca.sbcglobal.net
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- BOOKMAG - F/S COLLINS LITERATURE - PART 2
- All are original.
3-hole punched - marked "3HP."
Prices include mailing in the USA
BUY 2 OR MORE AND TAKE 10% OFF THE SUM OF THE INDIVIDUAL PRICES.
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NEWSLETTERS
PULSE - 11/73, Announcing the Collins-Rockwell merger - $15
SIGNAL - #28, #36, #38, #44 - $10 each
Collins Collector's Monthly Magazined - $10 ea or $40 for 6
vol 2 #8, #9, #10, #11, #12, #13
Collins Collector's Quarterly Magazine - $10 ea or $60 for 10
vol 1 #3,
vol2 #1, #4, #5&6, #7, #8, #9, #11, #12, #13
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OTHER
"Collins Developments in HF SSB" small booklet- - 3/57 - $15
Dealer list (pre ZIP codes), 3HP - $10
Development Description, 490T-1 Antenna Coupler, 12 pages - $15
THE COLLINS GUIDEBOOK AND NOTES, by THE COLLINS JOURNAL, 1994 - $15
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MECHANICAL FILTERS
General Catalog - 12 pgs, 3HP
- 6/54 - $12
- 4.68 - $15
F250A, Z Series, 3HP - $7
F455-E, F, H, J, K, Z Series, 4 pgs, 3HP - $8
F455FA-27, 3HP - $7
F455FA-120, 3HP - $7
F455FC-60, 3HP - $7
F455Y-330, 3HP - $7
F455A-16 (USB), 3HP - $7
F455Z-17 (LSB), 3HP - $7
- Listing #1744285 - Submitted on 09/26/25 by Callsign K3DUA, Modified on 11/02/25 - IP: pool-108-50-43-148.bltmmd.fios.verizon.net
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- MISC - YAESU XF—10HW CRYSTAL FILTER
- This filter is in excellent condition. The filter is used in the FT-101ZD transceiver, and perhaps others. It is a 2.8 kHz vari B/W filter at 10.760 Mhz IF. $25 shipped. I take PayPal, postal MO and check.
- Listing #1747171 - Submitted on 10/23/25 by Callsign W6XI, Modified on 11/01/25 - IP: ip68-109-162-111.ph.ph.cox.net
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